Belt splicing device



Patented Mar. 23, 1948 BELT SPLICING DEVICE Percy W. Doblin, Brooklyn,and Handel Ashworth,

- Baldwin, N. Y.

Application January 3, 1946, Serial No. 638,870

9 Claims. (Cl. 1-3) the matched ends while they are so held.

Yet another object of the invention is the provision of means forcutting the ends of a V belt to provide surfaces matching and abuttingone another along a, plane angular with respect to the longitudinalplane of the belt, clamping the ends of the belt in said matchingrelation, and securing said ends together by means of metallic staplesor the like passing therethrough and having their pointed ends clinched.

Heretofore in this art it has been customary to form V belts in endlessunits and as a result, in certain types of machines it was necessary toat least partially tear down a machine to get a belt on it. For example,on a lathe, it was necessary to take the live spindle out in order toget the belt over the shaft and onto the cone pulleys. Also largenumbers of difierent sizes of endless V belts had to be on hand in orderto take care of different center to center distances between the shaftscarrying pulleys which were to be engaged by the V belts.

By our invention we are enabled to cut and form (by splicing the cutends together) V belts for use in any situation and due to the fact thatthe belts are cut and spliced it is no longer necessary to dismantle orpartially dismantle the device on which the belt is to be used. The endsof the belt to be joined are accurately cut along acute angles and thecut surfaces are matched, clamped in matched relation, and permanentlysecured together while being so clamped. In some instances we may, inaddition to using the metallic stitching elements, apply an adhesive tothe matched surfaces to additionally reinforce the joint.

In order to illustrate the invention, one embodiment is shown in theaccompanying drawingsin which:

Figure 1 is a plan view of a cutting guide for cutting the ends of the Vbelts angularly;

Figure 2 is an end elevation of the cutting guide shown in Figure 1; I

Figure 3 is a fragmentary view showing the ends of a V belt securedtogether according to the invention;

Figure 4 is a plan view of the arrangements shown in Figure 3;

Figure 5 is a sectional elevation taken along the lines 5-5 of Figure 4;

Figure 6 is a perspective view of the device for clamping the cut endsof the V belt in proper relation and matching relation and for stitchingthe same together while so held;

Figure 7 is a side elevation of the device shown in Figure 6 withportions broken away to show the structure;

Figure 8 is a front elevation of the device shown in Figure 6;

Figure 9 is a rear elevation of the device;

Figure 10 is a plan view of the slidable carriage with the operatinglever and stitching means removed;

Figure 11 is a fragmentary view showing the method of mounting rollersfor engaging the stitching plunger; and

Figure 12 is a view showing a modified form of the operating lever.

Referring first to Figures 1 and 2, which illustrate a cutting guide forcutting the ends of the v belts to form the splice, a body In which maybe in a form of a rectangular block has a longitudinal slot ll formedtherein. Opposite sides l2 and I3 of the slot are parallel and perfectlyvertical. The bottom M of the slot is angular so that when a V belt tobe cut is positioned therein, the angular face which normally engagesthe shive, or angular faces of the belt groove in the pulley, lies onthe surface It and the normal inner and outer surface of the beltrespectively engage the sides l3 and I2. Within and adjacent to one endof the slot II is a vertical pin l 5 which functions as a stop pin.

Angular with respect to the axis of the slot Now, in order to use thecutting guide, one end of the V belt is positioned in the slot II withits end against the pin l5 and with a knife, saw

or other cutting device, positioned in the groove Hi, the end issevered, leaving an angular surface such as the surface 13 shown inFigure 3, then the other end of the belt is positioned in the slot ll,having its end against the stop pin 15 and the belt is cut by placingthe cutting deagsasai vice in the groove [1, thereby forming an angularsurface such as that shown at l9 in Figure 3.

After the belt, designated by the numeral 20, has been cut in the mannerdescribed above, it is then placed in our new and improved splicingdevice and clamped therein in the relation shown in Figure 3, followingwhich the angular or beveled ends are secured together in a manner to bepresently described.

Referring'now to Figures 6 120* 10 inclusive; the.

splicing or stitching device has a base 2|, a portion 22 of which has adovetail 23 formed thereonv on one side thereof, and which has adovetail .4a

Within and adjacent to the left end of slot 58, as seen in Figure 7, isa post 63 which is sefifia-ispositioned in the longitudinal slot 59 anda formed on the opposite side thereof. 'The por tion 22 has a centralslot 25. fhrmed: therein: haym urge'thenowof staples B2 to the left.

ing vertical side portions 26 and 21. Mountedin it r the slot is aslidable carriagegener-allydesi nated by the numeral 28, a plan viewof'whi'ch is 7 shown in Figure 10.

The carriage 28 has a. bottom surface 29 which slides gon thabottnmsurface-oi S1Qt-25i The canriage also has a beveled portion 30 alongroneiedge therccfi and; a second-beveledlnontiomrs Lgalongthe ppositeedge thereof, each respectively coop crating. with the; dovetails. 2aand: 2.42 The. carriage also has vertical side. portions; and: 33;.

which respectively form. sliding fits with. thezvertical: portions-26;and Z? of! the slot! 5; nespectivelyz. A-platetd (:Fignrem: issecnred-to :the. basezfl by means of screws; 3.5 andds,v providedtoili'init. the reanwardmotion othe:carriage28..

A, thumbscrew. 3h a. portion. 311 thteaded; into the base 2i and adaptedto engagetandsclamh the carria l in desiredpositionzom said base.

similar spring and follower block cooperate to -lQngitudina1.slot.58guide the staples. The riveting' plunger generally designated by thenumeral fifiz includes a substantially heavy rectangular bridge pieceE9, and formed integral therewith andlextending; vertically; downwardlyare plunger members Ileana 32.. Since theseplungeremeim bers operatethrough the-slotsflfi. and 4.1: respecw tiveiygthey are spaeerliapartthe desireddistanc between the rivets securing the. ends of, the belt.

togethem. Ap-late 1&- is secured to the end of the: carriageby meanstof;screws: M. and it has. a flat.

portion 15 at the end of the longitudinal. sl0t,-581

and: a -secondiflatportion 7.6 at-the end. of the longitudinal; slottannin is. else has aIcen-L tral. offset. portion 11.- which embracesthe tongue.

portion 15.. The endstapleiin each row is urg' 'ed'.

against the plate; 73, and when in that, position,

they, are; in: alignment. with. the. plunger portions,

The point of the-threaded portion 31; engages; at. 35 T;|:a,ng1;1 2;,

upper plate 40 has spaced slots il and: 42.. formed.

therein... These; slots arelo gitudinaland are equally spaced; from thecenten linear. the-plate The: plate also has'slots; &3.- and: 44 formed:i a tongue portion 4-5 at; cnefend-thereofs Adjacent; the. tongueportionare formed: slots 46; andI 4.1; thnoughwhich the riveting;Plungemtobepresente 1y described operates. the-plate.- dflw is; alongitudinal member 48; one; edge;- of which: constitutes the; bevelededge 30., The: longitudinal member 48. is secured totheplatefll meansof. screws 49;; Adjaeentthe opposite; edge; of; plate 4a is. a secondlongitudinal. member. fiiktheonter edge of.wh-iehieonstitutestheneveledi edge: 31!; above reierredi' to. This:memberis SQ? cured to the plat-eby means; of screws: 5-l.-..' 11btermetliate; the; longitudinal members. 48= and 5,0; is a. thirdlongitudinal: member 5 2, whichis, secured.

tothe plateau; bymeansof screws 5.3. Screws.

from belowvia. hole 53m en zfi tapped holes inv a.

. yoke. member 54.; A second. plate 5.5 isparalljel to.

. longitudinal; member 532 is formed a longitudinal s1ot59: Theselongitudinal slot-safe provided to Adjacent to one edge 01$ 7 Thecarriagefha vertioalpins. .78 and. 7.9 mounte ed therein and. lying onthecenter lines ofthe slots '43! and; 44.. The. helical spring 810..mounted.v

cm thepin 18- and a second, helical. spring 81.

mounted on; the pin. -19 reactagainst the can riage and: against theportion. 10 of-theplungen.

ures;6--to.= 9 is, designated generally by the numeral. Biandconsists:of. a. metallic; strip 8.3: anda second. metallicrstrip 841.,Thesestrips'contact,eacnothen fior alength- -.nea-r the-end'thereof.and. liewithin a. slot. 85 formed in the. block 54. A. cross-pin 81.?mounted in;the;b1ocl;54. forms a pivot pin.v upon.

whichthe-lever-B-E; is'mounted. The-lever alsohas;

specedparallfel; portions through which-{a shaft 88 extends. Mountedonthe shaft 83in spaced relationitor one another are rollers 89 and 9.0,and.

adjacent. toythei roller 8.9. is; a. washer 9lwhich.

bears against: the; shoulder formed on the shaft. 8E and; prevents.movement of. the roller 8.9. endwise. Adiacentztothe rollerflfi isaseconzdwasher $12; which also membersup with the shouldered:shafltvflltandr prevents the-roller 9.0 from movingv endwisgg. Thestrips 8.3; and 84: have. portions. that} accommodate-an operatinghandle93;. The'opem. ating handle is-mounted: on. a bolt 9.4 which ex.- tends.through the ends; of the: operating lever .2.

and is flanked on the ends by washers 95 and; 9.52.

When: am operator grasps the; handle fia. and moves; the same.downwardly; the rollers 89.- and. urge the plunger member 69 downwardlyagainst: the opposite urgegof the" springs. 89; and

Si, with the result; that the: end staple in: each;

row: is separated from. itslneighbors and is forced through the work.The work is heldin amanner receive the rows of staples 6 i and 6%respectively. tozbe presentlyde'scri'bedfiand the carriagetlflzmay maybe seen in Figure 8, the sides of the be moved relative to the workafter the screw 30 is loosened, and when moved to a desiredposition maybe secured to that position by means of the said screw 36. The base 2 Iis provided with lugs 91 and 9B and these lugs are slotted so that boltsor lag screws may be used to secure the device to a bench or othersupport. 7

An alternate form of handleras shown in Figure 12, wherein the twostrips 83a and 84a, where they stand beyond the rollers, are bent backinto contact with one another at 83b and 84b to accommodate a handle 99.

An elongated block I has an angular face IOI which forms a guide for oneengaging edge of the belt and an angular surface I02 formed on the base2I is adapted to be contacted by the opposite engaging edge of the belt.The base 2| has tongue-shaped portions I03 and I04 which engagecorresponding groove portions in the block I00 and thereby form ways.The portion I03 has a longitudinal undercut portion I05 adapted to beengaged by the end of a screw I 06 mounted adjacent to one end of theblock member I00, and likewise the member I04 has a similar undercutportion I01 adapted to be engaged at the end of a screw I08 carried inthe block I00, thereby an operator is enabled to adjust the block I00 inaccordance with the size of belt to be processed.

The device may also include a number of V shaped blocks, one of which isshown at I09. These blocks are adapted to be positioned in the bottom ofthe space between the surfaces NH and I02 to accommodate larger orsmaller belts. These blocks may be properly located on the base 2| bymeans of dowels, one of which is shown at H0. Thus, we are able toadjust the device not only to accommodate V-beltsto different widths,but also V-belts of different thicknesses.

Each block I09 is provided with a series of lateral grooves III in linewith the staples and adapted to turn the points of the staples towardeach other as the staples are forced through the belt. A graduated scaleII2 may be formed on the side of the base 2| adjacent of the surfacethereof and an arrow II3 formed on the side of the carriage incooperative relation with the scale I I2 is provided to enable theoperator to position the carriage in accordance with the number ofstaples to be forced through the belt. For example in a verry narrowbelt a single staple may be used in each position, Whereas in widerbelts, two or more staples may be used and may be laterally displaced bymoving the carriage on the base.

The lug 9'! may have a slot I I4 formed therein to accommodate a bolt orlag screw and likewise a lug 98 may be provided with a slot H5 for thesame purpose.

Although we have shown in the accompanying drawing one embodiment of theinvention, it is obvious that many changes may be made in thearrangement shown without departing from the spirit of the invention, asset forth in the following claims.

What is claimed is:

1. In a device for splicing V belts, a base, means on said base to holdthe beveled ends of a V belt in matched relation, said means havingangular faces corresponding to the side edges of said belt, a carriageon said base, means in said carriage adapted to receive a plurality ofstaples, and means on said carriage for forcing at least one of saidstaples through the matched ends of said belt.

2. In a device for splicing V belts, a base, means on said base to holdthe beveled ends of the V belt in matched relation, with the outside ofthe belt facing upwardly, a carriage on said base, a channel formed insaid carriage and adapted to carry a plurality of staples, a secondchannel formed in said carriage in parallel spaced relation to saidfirst channel and adapted to carry a second plurality oi. staples, meansfor urging said staples toward one end of said carriage, and means onsaid last end of said carriage for forcing the end staples in each ofsaid slots through the matched ends of said belt.

3. In a device for splicing V belts, a base, means on said base adaptedto be engaged by the driving surfaces of a V belt to be spliced, saidmeans being adapted to hold said belt with its beveled ends in matchedrelation, a carriage on said base adapted to be moved to and secured ina plurality of positions thereon, a pair of spaced channels formed insaid carriage, said channels to be adapted to carry rows of staples,means in each channel adapted to urge said staples toward'one endthereof, plunger means adapted to move in a path crossing said last endof said channels, and lever means carried on said carriage for forcingsaid plunger means downwardly and thereby forcing the end staple in eachof said channels through the matched ends of said belt.

4. In a device for forcing metallic staples through V belts for splicingthem, a base, adjustable means on said base for holding the beveled endsof a V belt in matched relation, said means being adapted to be adjustedin accordance with the sizes of the belts to be spliced, a carriagesupported on said base and movable along a path at right angles to thelongitudinal axis of said means for holding the belt, a pair of spacedchannels formed in said carriage, each of said channels being adapted tocarry a row of said staples, means in each channel adapted to urge thestaples toward one end thereof, said last-mentioned end being meansadapted to move in a path crossing said last end of said channels andadapted to engage the end staple in each channel, and lever meanscarried on said carriage for forcing said plunger means downwardly andthereby driving the engaged staples in said channels through the matchedends of the belt.

5. The invention, according to' claim 4, in which said plunger means iscomprised of a pair of spaced plungers joined by a heavier bridgeportion, and in which said lever means carries rollers adapted to engagesaid bridge portion and thereby force said plunger means downwardly.

6. The invention, according to claim 4, in which said means for holdingthe beveled ends of a V belt in matched relation is formed in part ofsaid base and in part of a member movable on ways on said base, saidmember including screw means adapted to engage said ways for clampingsaid member in an adjusted position on said carriage.

7. The invention, according to claim 4, in which a visual indicator isformed in part on one edge of said carriage and in part on said base,said latter part being in cooperative relation with said first part.

8. The invention, according to claim 4, in which said adjustable meanson the base for holding the beveled ends of the V belt in matchedrelation comprises a removable block doweled on said base and therebypositively located on said base with respect to the path of saidcarriage.

9. The invention, according to claim 4, in which

